Octane solutions containing metal salts were irradiated with 350 nm photons using oleoyl sarcosine as a particle stabilizer and benzophenone as a particle sensitizer to produce suspensions of nanometer-sized metal particles. The goal of this study was to prepare nanofluids with enhanced thermal conductivity in comparison to pure octane. It was found that the thermal conductivities were enhanced by the production of the nanofluids, with a 10 % enhancement being observed at 50oC....
The thermal transport properties of nanofluids containing single-walled carbon nanotubes (SWCNTs) in ethylene glycol and (poly)-alpha olefins (PAO) were investigated. It was found that the addition of SWCNTs enhanced the thermal conductivity of each of the two base fluids, with this enhancement increasing as the loading of SWCNTs increased. The authors were able to create an accurate predictive model of the thermal conductivity for these nanofluids by characterizing the ...
The authors present a method of producing Cu2CdSnSe4 quaternary nanocrystals using a colloidal synthesis route that could be used for future industrial synthesis. The nanocrystals prepared showed great potential for use as a thermoelectric material due to their high thermoelectric figure of merit (up to 0.71) resulting from a high electrical conductivity and low thermal conductivity. The authors believed that these properties could be further tuned in order to increase ...
The effects of particle size/shape, base fluid, and volumetric concentration on the thermal conductivity of nanofluids has been studied. It was found that decreasing the particle size leads to an increased thermal conductivity, and that using water as a base fluid led to the greatest enhancement of thermal conductivity. The effects of gravity, Brownian motion, and thermophoresis on particle motion were also investigated and it was found that gravity ...
The properties of carbonized lignin nanoparticles were investigated to determine if this material could be used as an environmentally-friendly alternative to carbon black. The observed surface area of the carbonized lignin was found to be higher than that of carbon black because the powder is highly porous. The lignin nanoparticles were able to be produced in such a way as to give a similar size as carbon black nanoparticles, with ...
